The 36-year-old star - who is pregnant with her fifth child and has sons Harvey, 12, Junior, eight, and daughter Princess, six, from previous relationships, as well as nine-month-old baby Jett with her husband Kieran Hayler - insists she doesn't have time to apply cosmetics because she's busy with the children.

She told the MailOnline: ''The older you get, the less interested in make-up you are. A smoky eye is ageing and with four kids, the last thing on my mind is make-up.

''In fact, I don't wear any. Vaseline is the only thing in my make-up bag to keep my lips moisturised.''

However, Katie - who recently exposed her spouse's affair with her best friend Jane Pountney - does have four treatments which she ensures she makes time for.

She confessed: ''I have my eyelashes and eyebrows tinted every week. I think good brows are really important and I love having a matching manicure and pedicure. I've had the same girl doing it for six years.''